diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs index bd5897a84d..28f0d1fff7 100644 --- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs +++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs @@ -2668,6 +2668,7 @@ namespace MediaBrowser.Controller.MediaEncoding public string GetFastSeekCommandLineParameter(EncodingJobInfo state, EncodingOptions options, string segmentContainer) { var time = state.BaseRequest.StartTimeTicks ?? 0; + var maxTime = state.RunTimeTicks ?? 0; var seekParam = string.Empty; if (time > 0) @@ -2678,6 +2679,14 @@ namespace MediaBrowser.Controller.MediaEncoding // This will help subtitle syncing. var isHlsRemuxing = state.IsVideoRequest && state.TranscodingType is TranscodingJobType.Hls && IsCopyCodec(state.OutputVideoCodec); var seekTick = isHlsRemuxing ? time + 5000000L : time; + + // Seeking beyond EOF makes no sense in transcoding. Clamp the seekTick value to + // [0, RuntimeTicks - 0.5s], so that the muxer gets packets and avoid error codes. + if (maxTime > 0) + { + seekTick = Math.Clamp(seekTick, 0, Math.Max(maxTime - 5000000L, 0)); + } + seekParam += string.Format(CultureInfo.InvariantCulture, "-ss {0}", _mediaEncoder.GetTimeParameter(seekTick)); if (state.IsVideoRequest)